CyberVein：Build Your City
CyberVein held an optimistic view about the application and prospects of blockchain, artificial intelligence, big data, Internet of Things and other technologies in the field of building smart cities. After more than three years of research and development, we have successfully established project in the fields of smart finance, smart medical, smart transportation, smart security, etc., and have developed an original blockchain underlying public chain and high-quality DApp products.
Before conducting an overview of CyberVein’s entire technology and products, it is necessary to briefly introduce DAVE, DAVE Alliance, CROSS and CVT so that readers can understand the following product descriptions:
（1）DAVE
It is mainly composed of PISR database, DAG distributed storage, Cytrix distributed computing platform, AI federated learning and decentralized NFT issuance and auction platform CROSS. DAVE can carry out big data analysis and quantitative valuation. It has the characteristics of safety, intelligence, and value, and uses CROSS to hedge various financial risks and realize data assetization.
（2）DAVE Alliance
DAVE Alliance is not only an alliance of industry and technology, but also an ecological, consisting of service providers in four major sectors: database, distributed storage, distributed computing power integration and federated learning. After joining the DAVE Alliance, any traditional and non-traditional institutions will inject fuel into DAVE in their areas of expertise, such as storage, algorithms, computing power, hardware or metadata, etc., to promote the implementation of global smart city construction.
（3）CROSS
CROSS was initiated by the CyberVein Foundation. It is the world’s first decentralized NFT issuance & auction platform, and it is also the issuance and trading platform with the most diverse types of NFTs. Currently, the main types of NFTs include digital financial derivatives, training models, digital certificates, Encrypted artwork.
The current NFT projects on the market are all focused on consuners, and CROSS has also extended the enterprises, which is the first in the industry. In the enterprise sector, CROSS assigns scarce digital assets on DAVE, which is also our advantage in developing “DeFi+NFT”. It also creates an amplification of the value of CVT. Whether in DAVE or CROSS, we regard the enterprise node as an important force.
（4）CVT
CyberVein’s dedicated cryptocurrency CVT, with functions like exchange credit points and incentives. CVT also serves as a medium for issuing and trading NFTs to realize data assetization. The more data in the CyberVein ecosystem, the more contributions, and the more CVTs that need to be pledged. CVTs used more frequently, and the ecological circulation is stronger, and their price and value become immeasurable.
Technology Architecture
Data layer: public chain + alliance chain
Core layer: public chain solutions include CVVM virtual machine, PDP storage integrity certification, zero-knowledge proof, transaction pool, block selection mechanism, confidential algorithm module; alliance chain solutions: contribution value algorithm, CVT pledge pool, data encryption Module, ABCI interface module, zero-knowledge proof, cross-chain module
Network layer: P2P network, HTTP service GIN, JSON-RPC, gRPC
Consensus layer: The public chain uses the PoC contribution value proof mechanism, and the alliance chain uses the PBFT Byzantine fault-tolerant algorithm
Incentive layer: The public chain is mainly based on block packaging transaction GAS, and the alliance chain is mainly based on data contribution value
Tool layer: data oracle machine, smart contract, IPFS service, blockchain browser
Application layer: Decentralized NFT platform CROSS, Cytrix distributed computing platform, CyberVein wallet and other DApps
Technology + Product Description
1. Data layer: public chain + alliance chain
The CyberVein smart city ecology will be composed of a public chain based on the POC consensus and numerous PBFT consensus alliance chains. Every consortium chain based on the PISR database is a node participating in the POC consensus. Every consortium chain based on the PISR database is a node participating in the POC consensus. The alliance members in the DAVE Alliance are also composed of node alliance chains on the public chain. However, DAVE Alliance members must be nodes on the public chain, and nodes on the public chain are not necessarily members of the DAVE Alliance.
About the alliance chain
The alliance members in the DAVE Alliance are also composed of node alliance chains on the public chain. Access to the database requires the alliance node to vote for confirmation, and to ensure that the database operation is on the chain so that other members in the alliance can see the database operation. The alliance chain uses the PBFT practical Byzantine fault-tolerant mechanism for consensus, and uses CyberVein’s PISR database for data storage.
About public chain
Transactions in the public chain are more about processing asset transfers and proof of contribution between public chain nodes. In order to take out block rights in the public chain, verify the validity of encrypted data and other contribution proofs based on zero-knowledge proofs, which can fully prove that you are The legal owner of a certain right does not disclose relevant information and maintains the stability of the entire ecology.
About cross-chain
Data credibility is an important part of blockchain. CyberVein can intelligently and format data from the traditional Internet side and put it on the chain, so that data can interact more efficiently and generate value. This is key of digital assetization. After the value is played out, these data will return to the ecology of the data itself, forming a complete closed loop. The more companies and individuals that contribute data, the more data that can be applied and processed, and the more demand there will be. Among them, data interaction requires a more direct cross-chain experience, and public chains and alliance chains also require cross-chain technology.
CyberVein cooperates with the ChainLink team to use cross-chain technology in data interaction to build a bridge between offline data and on-chain communication, to solve the problem of data silos in smart city, and to connects between smart cities. . DAVE Alliance members can connect to any API, whether it is a blockchain, enterprise system, Web API or Internet of Things devices, and can trade and record asset ownership without any on-chain transactions. This method is great for database expansion and down-chain Transaction costs are very effective.
2. Consensus layer: PoC+PBFT
POC (Proof of Contribution) means proof of contribution value, which stipulates that when each contributor has the same hashing power, the accounting rights are determined by the proportion of contribution. The more resources are contributed to the ecology, greater opportunities to obtain block manufacturing . Because there is no mining in the public chain, the transaction fees generated by all transactions in the block will become the incentive for the block producer.
The PISR database carries all the encryption, storage, query, exchange and use of data. The calculation of data contribution value requires real-time feedback. Therefore, the PBFT (Practical Byzantine Fault Tolerance) mechanism is selected to provide such high concurrency and immediacy transactions to achieve consensus. At the same time, the essence of the alliance is that the member nodes have a certain degree of trust with each other, so the Byzantine fault tolerance mechanism is also very suitable in the scene.
Data contribution value
The PISR database will also calculate the user’s data contribution value based on indicators such as the volume of the data and the number of runs of the encryption algorithm. The contribution value of the data here is equivalent to the user’s estimate of the value of their data, because in the calculation process of the encryption algorithm, the user will consume a lot of irreversible resources, and the resource consumption that the user is willing to bear for the data which reflects its importance and value .
Because the expansion of the alliance chain means if more nodes recognize the value of data, and the contribution of data to the ecology will continue to increase. All joined members need to access the PISR database, and access to the database requires other alliance nodes to vote and confirm, and to ensure that the database operation is on the chain, so that other members can see the database operation, and create more data value by calling and evaluating the data and the database .
Since the contribution value of a single block is generated by the node, the contribution value of the node is used to control the block generation rights, etc. In order to prevent malicious behavior, CyberVein introduced the solution of pledge + contribution value to determine the block right in the PoC consensus mechanism. In this mechanism, it is not only the contribution value of the data that affects the right to block generation, but the amount of CVT pledge will also become an important factor affecting the right of block generation.
CVT pledge amount
When nodes need to staking to compete for block production, they will be more inclined to jointly maintain the value of CVT to reduce the motivation for been evil. In this process, the accumulated contribution value of the ABC alliance’s CVT pledge quantities and data contribution value will be calculated to determine who has the right to generate blocks.
The introduction of pledged CVT in the consensus mechanism is a robust business model that promotes the development of decentralized ecology. It does not require users to configure expensive hardware. Only the amount and duration of mortgage can promote the growth of CVT value and ecology, and accelerate the completion of the project ecology. Staking CVT will also help ensure network security and the rights of ecological participants, further increase the stickiness of CVT community users, and allow the CVT ecology to operate virtuously.
3. Application layer: DAVE+CROSS
The barriers of various departments in the city are very high. Some barriers are due to data security considerations, which makes data fusion face obstacles. DAVE allows data to be integrated, PISR database provides data management;, DAG storage chain provides data storage, AI federation learning to provides data feasibility study, and Cytrix distributed computing power allows data avaliable for study and forming a flexible data sharing standard. In addition to makes data available and invisible, data can be provided only once, thereby balancing data security and the balance of interaction. If data holders and producers want to conduct global big data business, they can use CROSS to discover the value of data to help the firms and governments business operation, and the consumers can also benefit from their own data.
CyberVein uses DAVE and CROSS to solve the problem of data credibility, and has tested and successfully run it in the business. Such as the Dubai Government Expo Central Pavilion, Zhejiang University Run Run Shaw Hospital, Zhoukou City Port District Government Agricultural Alliance Chain, Jiangsu Nextstage security system and other cases, and have carried out operations in more than 30 cities, it is expected that there will be a wider range in the second half of 2021.
